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• Polyphenyl ether
  ...upon the number of aromatic rings, their substitution pattern, and whether it is an ether or a thioether. In the case of products of mixed structures, p ...uim and Bill Foley; http://www.xtronix.ch/pdf/Diffusion%20Pump.pdf</ref>. It is important to note that PPEs help achieve the highest vacuum of 4 x 10-10
  18 KB (2,654 words) - 10:18, 20 September 2010
• Lunarcrete
  ...r [[ilmenite]] at 800°C, to produce [[titanium oxide]], iron, and water. It was capable of withstanding compressive pressures of 75 MPa, and lost only * It is unaffected by temperature variations of +120°C to &minus;150°C.<ref na
  15 KB (2,061 words) - 10:21, 20 September 2010
• Hemp
  ...for cannabis. Only ''C. sativa'' (left) is suited for industrial hemp, but it also has medicinal varieties.]] </ref> For a crop, hemp is very environmentally friendly, as it requires few [[pesticide]]s<ref name="thehia">
  42 KB (6,310 words) - 22:11, 21 September 2010
• Monel
  ...corrosion and acids, and some alloys can withstand a fire in pure oxygen. It is commonly used in applications with highly corrosive conditions. Small ad ...mic]] [[friction]]. Monel metal is dense, and hence parts that are made of it are heavy, but this factor had to be traded-off against the fact that Monel
  9 KB (1,437 words) - 10:23, 20 September 2010
• Fever
  ...[tympanic membrane]] it is {{convert|35.4|–|37.8|C|F}}, and for axillary it is {{convert|35.5|–|37.0|C|F}}.<ref>{{cite journal |author=Sund-Levander ...}}</ref> Such a high temperature is considered a [[medical emergency]] as it may indicate a serious underlying condition or lead to significant side eff
  27 KB (3,703 words) - 20:20, 20 September 2010
• Ethylene oxide
  ...ation|polymerizes]]. Ethylene oxide is [[isomer]]ic with [[acetaldehyde]]. It is a strong poison to humans, showing carcinogenic, [[mutagenicity|mutagen ...mponent of [[thermobaric weapon]]s;<ref name=e1/><ref name=e2/> therefore, it is commonly handled and shipped as a refrigerated liquid.<ref name=Ullmann>
  82 KB (11,709 words) - 21:31, 20 September 2010
• Reporting of Injuries, Diseases and Dangerous Occurrences Regulations
  ...1995 [[Statutory Instrument]] of the [[Parliament of the United Kingdom]]. It regulates the [[statute|statutory]] obligation to report [[death]]s, [[inju It is a [[defence (law)|defence]] that the responsible person [[knowledge (Eng
  24 KB (3,474 words) - 21:31, 20 September 2010
• Beryllium
  ...f thermal expansion, make it in many ways an ideal aerospace material, and it has been used in rocket nozzles and is a significant component of planned s ...ielded the first significant pure samples of beryllium.<ref name="Weeks"/> It took until [[World War I]] (1914–18) before significant amounts of beryll
  41 KB (5,890 words) - 21:34, 20 September 2010
• Electromagnetic field
  ...space and describes the [[electromagnetism|electromagnetic interaction]]. It is one of the four [[fundamental force]]s of nature (the others are [[gravi ...ly (although strictly unnecessarily) used to explain certain observations. It is found that increasing the intensity of the incident radiation (so long a
  21 KB (2,891 words) - 21:36, 20 September 2010
• Partition coefficient
  ...how strong an effect it will have once it reaches it target, and how long it will remain in the body in an active form. ...the lipid bilayer, but not so hydrophobic, that once it is in the bilayer, it will not partition out again.<ref name="Kubinyi">{{cite journal |author=Kub
  27 KB (3,780 words) - 20:16, 21 September 2010
• Stability constants of complexes
  ...[[equilibrium constant]] for the formation of a '''complex''' in solution. It is a measure of the strength of the interaction between the reagents that c ...ues]] are ''dissociation'' constants. In general purpose computer programs it is customary to define all constants as association constants. The relation
  50 KB (7,450 words) - 20:16, 21 September 2010
• Solubility equilibrium
  '''Solubility equilibrium''' is a type of [[dynamic equilibrium]]. It exists when a [[chemical compound]] in the solid state is in [[chemical equ ...ature]]. For example, sugar is more soluble in hot water than cool water. It occurs because solubility constants, like other types of equilibrium consta
  23 KB (3,592 words) - 20:16, 21 September 2010
• Acid dissociation constant
  ...arboxylate group, COOH. The carboxylate group can lose a proton and donate it to a water molecule, H₂0, leaving behind an acetate anion CH<sub ...roperty|quantitative]] measure of the strength of an [[acid]] in solution. It is the [[equilibrium constant]] for a chemical reaction known as [[Dissocia
  76 KB (11,861 words) - 20:17, 21 September 2010
• Specific ion interaction theory
  ...e]] solutions at relatively high concentrations.<ref name=G/><ref name=C/> It does so by taking into consideration ''interaction coefficients'' between t ...–Hückel equation|Debye-Huckel]] theory provides a means to do this, but it is accurate only at very low concentrations. Hence the need for an extensio
  9 KB (1,329 words) - 20:17, 21 September 2010
• Bromley equation
  ...n when extrapolating to very high ionic strength. As with other equations, it is not satisfactory when there is [[ion-association]] as, for example, with
  6 KB (903 words) - 20:17, 21 September 2010
• Raoult's law
  ...each additional component. If a pure solute which has zero vapor pressure (it will not [[evaporate]]) is dissolved in a solvent, the vapor pressure of th ...onents to the composition of the solution. The law assumes ideal behavior. It gives a simple picture of the situation just as the [[ideal gas law]] does.
  11 KB (1,748 words) - 20:17, 21 September 2010
• Pitzer equations
  ...fy the departure from the [[ideal gas law]] with changing pressure, ''P''. It can be shown by [[statistical mechanics]] that the second virial coefficien ...ion through the parameter ''&beta;''. This is the basis of [[SIT theory]]. It was further developed by Guggenheim.<ref name=G>{{cite journal|last=Guggenh
  11 KB (1,750 words) - 20:17, 21 September 2010
• Equilibrium chemistry
  ...It will be insulated from exchange of heat with the surroundings, that is, it is a [[closed system]]. A change of temperature, pressure (or volume) const ...are constant because the rate of production is equal to the rate of decay. It is not a chemical equilibrium because the decay process occurs in one direc
  42 KB (6,675 words) - 20:17, 21 September 2010
• Hemoglobin
  ...he [[lung]]s or [[gill]]s to the rest of the body (i.e. the tissues) where it releases the oxygen for cell use. ...er of letters in a written sentence or beads on a string. In all proteins, it is the variation in the type of amino acids in the protein sequence of amin
  67 KB (9,844 words) - 20:17, 21 September 2010
• Chemical equilibrium
  ...fficient conditions|necessary condition]] for chemical equilibrium, though it is not [[Necessary and sufficient conditions|sufficient]] to explain why eq ...ant, independent of the activities of the various species involved, though it does depend on temperature as observed by the [[van 't Hoff equation]]. Add
  38 KB (5,847 words) - 20:17, 21 September 2010

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